# Single Engine 

# Service Bulletin
June 18 , 2007

TITLE FUEL RETURN LINE INSPECTION
EFFECTIVITY Model 172R 172S

REASON Serial Numbers 17281188 thru 17281390 172S9491 thru 172S 10489 A Textron Compa n y



### SB07-28-01

A report has been received that a part number 0500118-49 Fuel Return Line Assembly was found rubbing against the right steering tube assembly during full rudder pedal actuation

. DESCRIPTION This Service Bulletin provides instructions to inspect the fuel return line for damage , and if necessary, repair or replace the line assembly

. Non-compliance with this Service Bulletin could potentially result in a fuel leak.
COMPLIANCE Mandatory: shall be accomplished at the next scheduled maintenance or inspection not to exceed 100 hours of operation or 12 months, whichever occurs first.
APPROVAL FAA approval has been obtained on technical data in this publication that affects airplane type design

. MANPOWER 0

.8 man-hour for inspection If necess a ry . add 0.4 man-hour to re pa i r the fuel return line assembl y If necessary. ad d 0 .3 man-hour to re pl ace the fu e l return line asse m bly

Page 1 of 7**T~ obt~in**  satisfactory results , procedu rt!s**pccjfied** in this publicnl;on mus t b(; ilccompl;.:ohed In occorJance w ith**..l.;c~p eJ**  riic; h o C:s Jr.j**j:.(~va'ljng** government regu l atiOns

. Ces.,.na AI(l.raft Company cannot be responsible for the Quality o f work perfo rm ed In accompli shin g the '!jq

... ! rc menls o f lMi s publication

.
COPYR IGHT © 20()7REFERENCES Model 172 Series 1996 and On Maintenance Manual NOTE: Make sure all publications used are complete and current. NOTE: This information shall be considered an amendment to the Cessna Manufacturer's Service/Maintenance Manual or Instructions for continued airworthiness and must be accomplished for ongoing airworthiness compliance as required per 14 CFR Part 43

. 13

. OTHER PUBLICATIONS AFFECTED Model 172R & Model 172S Illustrated Parts Catalog NOTE: Make sure all publications used are complete and current.
MATERIAL PRICE AND AVAILABILITY The parts below are available from Cessna Parts Distribution through an appropriate Cessna Service Station for the suggested list price shown

.

Part Number Description 0500118-49 Fuel Line Assembly Qty/Airplane 1 (if required) Price 

### $ 123.00 (S) ea
ALL PRICES SUBJECT TO CHANGE WITHOUT NOTICE
CREDIT INFORMATION A labor allowance credit of 0.8 man-hour per airplane will be provided to inspect the fuel return line assembly as described in this Service Bulletin

. If necessary, an additional 0.4 man-hour per airplane will be provided to repair the fuel return line assembly or an additional 0.3 man-hour per airplane will be provided to replace the fuel retum line assembly as described in this Service Bulletin

. Freight will be credited at the most economical method unless pre-approved by Cessna. For pre-approval contact Cessna Parts Distribution Warranty Administration at Telephone: 316-831-4296, Fax: 316-206-2746 or E-mail: cpd2claims@cessna.textron.com

. To recei ve cred i t , the work must be completed and the Warranty Claim submitted by a Cessna Single Engine Service Station within 30 calendar days of Service Bulletin compliance before the credit expiration dates shown below

. NOTE: Part numbe r 0500118-49 fu e l lines removed based on the inspection results of this Service Bulletin s h a ll be h e ld for fi e ld sc rap pe r standard procedure s. D o m es ti c Int e rnati o nal Sp e cial Note to Service Station :; : Jun e 1 8, 2008 June 1 8. 2 008

li\fh8n i'OU**comp~~tl}** th'1-**\N~rn':' t'J**  CI;--i"T', th8 ! "1h:1'"**O\ ·.I8n:~**  r:!:1i'l1:-d '3 h-=!11**~~** i!e:1""t:: ,:" j fer :::nr-:h**:.,h""1·~** 'j+-; t hn completed.

Page 2 S3e7
-28-U 1 June 

### 18. 2007

### ACCOMPLISHMENT INSTRUCTIONS Weight And Balance Information N eg li gible Material Information The part below may be necessary : DESCRIPTION OLD 

### PIN

NEW 

### PIN 0500118-49 QUANTITY 

### 1 Fuel Line Assembly Same

Instructions 1

. P repare the airplane for maintenance

. A. Make sure that all switches are in the OFF/NORM position

. B

. Disconne ct electrical power from the airplane

. (1) Disconnect the airplane battery

. (2 ) Disconnect external electrical power. DISPOSITION Refer to Credit Information Section

.

C

. Attach maintenance warning tags to the battery and external power receptacle that have "DO NOT CONNECT ELECTRICAL POWER
- MAINTENANCE IN PROGRESS" written on them

. 

### WARNING: IF THE AIRPLANE HAS AMSAFE INFLATABLE RESTRAINTS, DO NOT REMOVE SEATS WITH THE SEAT BELTS BUCKLED OR THE ELECTRONICS MODULE ASSEMBLY (EMA) CONNECTED. DAMAGE TO THE SYSTEM CAN OCCUR AND AN ACCIDENTAL DEPLOYMENT OF THE SYSTEM CAN CAUSE INJURY. 2

. Disarm the AMSAFE Inflatable Restraints

. (Refer to the Model 172 Series 1996 and On Maintenance Manual , Chapter 25, Inflatable Restraint System
- Maintenance Practices.) 3. Get access to the 0500118-49 Fuel Return Line Assembly as follows: A. Remove the copilot's seat from the seat track and move it aft and away from the work area . (Refer to the Model 172 Series 1996 and On Maintenance Manual. Chapter 25

. Flight Compartment

- Maintenance Practices.) NOTE : You do not have to d i sconnect Ihe seat belt from the copilot's seat. B

. Remove the acc ess panel (230BT) and Ihe rudder pedal close-out panel below the copilot's rudder pedals

. (Refer to th e Model 172 Series 1996 and On Maintenance Manual , Chapte r 6 , Acces sllnspe ction Plates
- Description and Operation.) 4

. ( Refe r to Figure 1. View A- A. ) Do a n i ns pe ction of th e 05001 18-49 Fuel Return Line As s embly as fo llows: A. W ith a fla s hl ig ht a nd a mi rro r , do an in spe ction of th e 050011 8 -49 Fuel Return Lin e Ass em b ly for damage i n th e area of th e MC0 543022-2C Stee ri ng Tube Asse mbly. (1) If the re is no damage to t he 05 00 11 8-49 F ue l Retu rn Line Assemb l y , go to Ste p 9 (2) If th e re IS 

### damage to the 0500 11 8-49 Fue l Re tu rn Line Assemb ly :

:"o07-<!H-O I (D) p 'JII**th~ (U** **!** s hut · .... r

r v ,lve h:md l e 

### a r • :0 :-.r llt off**tJ.,~** rU ':1 ! 

### "]:.: pply**:orn ~h** **~** 

### ';1J i n p 

### (b) Remove the 0500118-49 Fue l Re turn Line Assembly and ins ta ll protec tive caps on the S2218-4 Check Valve. AN832- 4 Union at the nr"wa ll

. and each end of the 050011 Q
-49 

### :==u...:l R'Jturn**Lin~"! '\~s~~** **:lb ly** **,**


### June 18,2007 Page 3(c) Make sure th at th e re is only res idu a l fuel lea ka ge from the S2218
-4 C heck Valve after you disconnect the 0500118-49 Fuel Return Line Assembly , If there is more than residu a l fuel leakage, you must replace the S2218-4 Check Valve , (Refer to the Model 172 Series 1996 and On Maintenan c e Manual , Chapter 28, Fu e l Storage and D is tr i bution
- Maintenan ce Practi ces , ) (d ) Do an inspection of the damage on th e 0500118-49 Fuel Return Line Assembly

. 1 If there i s damage in the area of a bend radius of the line , you must replace the 0500118-49 Fuel Return Line A s sembly, Go to Step 5 , 2 If there is damage o n the line of a depth of more than 0,0035 inch , or you cannot measure the depth of the damage , you must replace the 0500118-49 Fuel Return Line Ass e mbly , Go to Step 5 ,**~** If there is damage on the line of a depth of 0 , 0035 inch or less and it is not in the area of a bend radius of the line , repair the damage to the 0500118-49 Fuel Retum Line Assembly with blending procedures in accordance with FAA Advisory Circular 43,13-1 

# e Acceptable Methods, Techniques , and Practices Aircraft Inspection and Repair, Then go to Step 5 , 5 , ( R efer to F igure 1 , View A-A , ) Install the 0500118-49 Fu e l Return Line Assembly as follows : A , Remove the protective caps from the 0500118-49 Fuel Retum Line As sembly , S2218-4 Chec k Valve , and AN832-4 Union at the firewall. 

## e , Hand ti ghten the 8-nuts at th e two ends of the 0500118-49 Fuel Retum Line Assembly, C , Put the 0500118-49 Fuel Return Line Assembly in the position that gives correct clearance between the airplane structure and the MC0543022-2C Steering Tube Assembly when the rudder pedals and nosewheel move through the full left and right positions , 0 , Turn the nosewheel with a tow bar and move the copilot's rudder pedals at the same time while you look at the MC0543022-2C Steering Tube Assembly as it moves through its full range of motion , Make sure that the MC0543022-2C Steering Tube As s embly does not touch the 0500118-4 9 Fu e l R etum Line Assembly or the a i rplane structure, E , Hold the 0500118-49 Fuel Return Line Assembl y in the correct position while you torque the 8 - nut s to 120 inch
- pounds , +20 or -20 inch-pounds , 6 , Do a check to make sure that the 0500118-49 Fuel Return Line Assembly does not touch the right MC0543022-2C Steering Tube Assembly as follows: A , Turn the nosewheel with a tow bar and move the c opilot' s rudder pedals at the same time while you look at the MC0543022-2C Steering Tube Assemb l y as it moves through its full range of motion , (1) If the 0500118-49 Fuel Return Line Assembly touches the right MC0543022-2C Steering Tub e Assembly or the airplane stru cture , you must loosen the two B-nuts that attach the 05 00118-49 Fuet Return Line Assembty and do Step 5B thru 5E again until the 0 50011 8 -49 F u e l Return Line A ssembly do e s not touch the right MC0543022
-2C Steering Tube A sse mbl y or the ai rpl a ne stru cture , Go to Ste p 7 , (2) If t he 0500 1 18-49 Fu e l Ret urn li n e Asse m b l y does not to u c h th e ri g ht MC0543 0 22 - 2C S teeri n g Tu be Ass e m bly o r th e airp l a n e st ru ct u re , g o to S te p 7 , 7

. Pu s h Ih e fu e l s hutoff valve ha n d l e forward to t he ON po s i tio n , 8 , Do a chack fo r l ea ks al t he 0500 11 8-49 F ue l Return Lill e A sse m b ly, 9**In ~t** **'1 !!**  !hp**:=tr. r.~ss**  pl.;l t !? f ? 30 BT ) '1 nd th o**urjr1 r** **rr::-m~ 1** **')r:~- r)ut**  r::t n e l.**-~ r**  to**~e ~0de** **l** 17 ?**~_! iDS**  1 996 and O n Mai ntena n ce M a n u a l, C ha pter G, Ac:es3J: n spec:ion Pl ates -**.::;r iv** **n** 

### cm d Opera l ;on . ) 10 , In s ta ll the copi l ot's se at. ( Refe r to th e M o d el 172 Sbr i es 19 96 a n d On M ai nte n a n ce il.lan ual, Ch apte r 25 , i=i :g ;ll**~"'iJ '-'I.;:tH**  - bl <Ji n l Jf' tr'.: '

_ ' 

### ? r o.:l;,,;ti ,,;:..: .... )

Pa ge 

### 4 SBO ,. -20 -01 Ju ne 18, 2007

### WARNING: FOLLOW ALL SAFETY PRECAUTIONS WHEN YOU WORK ON OR NEAR THE INFLATABLE RESTRAINT SYSTEM. THE INFLATOR ASSEMBLY IS A STORED, GAS/ENERGETIC MATERIAL DEVICE AND CAN CAUSE DAMAGE TO THE SYSTEM AND/OR INJURY TO PERSONNEL IF ACCIDENTALLY DEPLOYED 11

. Arm the AMSAFE inflatable restraint systems
. if Installed. (Refer to the Model 172 Series 1996 and On Maintenance Manual , Chapter 25. Inflatable Restraint System
- Maintenance Practices

. ) 

### 12. For airplanes with the AM SAFE inflatable restraint system, do an operational check of the seat belt system. (Refer to the AMSAFE Supplemental Maintenance Manual , part number E508804

. ) 

### 13
. Remove maintenance warning tags from battery and external power receptacle and connect the battery

. 

### 14
. Make an entry in the airplane logbook that states compliance and method of compliance with this Service Bulletin.

SBUi-23·U I 

### J u n e 

### 18. 2007 Page 587778



## A 

## A Firewall (Referen c e)

AE3663163E0240 Hose Assembly (Reference)

AN832- 4 Un ion (Reference) AN924
- 4 N ut AN960-916L Washer (Reference) Fuel Shutoff Valve (Reference)

(NOTE) Electrical Fuel Pump (Reference)

MC0543022-2C Steeri ng Tube Assembly .2:-

___ (Reference)

B-Nut (Reference) 0500118-49 Fuel Retum Line Assembly (1 If Required)



## • FWD VIEW 

## A-A 0516009-24 Fuel Reservoir Assembly (R eference)

B-Nut 0500118-53 (Reference) Line S2218-4 Assembly Check Valve (Reference) (Reference)

Look i ng Do wn at Correct In stallati o n

NOTE: Turn the nos'3wl1 ee l with a tow bar and move t he copilot's rudder**peda ~**  

### at the same t i m" while you loo k at th e M C0543022-2C Steering Tube Asse m b ly 35 

### it mOV8S thro11:;h it s full range of motion to ma!.;n**re** it d'Jes n01 touc h 

### til e 0:;00118-49 

### Fud Return Line**s~e rnbly**  

### or the ai rplane structure. IlS 1 0T1Q07 ,u,rfi16TO l 5(l

!:iBO (-La-Ot 

### Page 6 June 1 3 , 2007OWNER NOTIFICATION 

### On June 18, 2007 the following message will be sent to applicable owners of record in SB07-28-01A

. Dear Cessna Owner : Th i s Owner Advisory is to inform you that Service Bulletin SB07-28-01 : Fuel Return line Inspection has been released

. A report has been received that a part number 0500118-49 Fuel Return line Assembly was found rubbing aga i nst the right steering tube assembly during full rudder pedal actuation. Service Bulletin SB07-28-01 provides instructions to inspect the fuel return line for damage , and if necessary , repair or replace the line assembly

. Non-compliance with this Service Bulletin could potentially result in a fuel leak

. Compliance is mandatory: shall be accomplished at the next scheduled maintenance or inspection not to exceed 100 hours of operation or 12 months , whichever occurs first. The Information contained in Ihe referenced Cessna Service Bulletin shall be cons i dered an amendment to the Cessna Manufacturer's Service/Maintenance Manual or Instructions for continued airworthiness , and must be accomplished for ongoing airworthiness compliance as required per 14 CFR Part 43

. 13. A labor allowance credit of 0

. 8 man-hour per airplane will be provided to inspect the fuel return line assembly as described in Service Bulletin SB07-28-01

. If necessary , an additi onal 0.4 man-hour per airplane will be provided to repair the fuel return line assembly or an additional 0

. 3 man-hour per airplane will be provided to replace the fuel return line assembly as described in Service Bulletin SB07-28-01

. To receive credit, the work must be completed and the Warranty Claim submitted by a Cessna Single Engine Service Station within 30 calendar days of Service Bulletin compliance before the credit expiration dates shown below

. Domestic

. . . , . . . . . • . . . . . . . . . . . June 18, 2008 International

.... . . . . . . . . . . . . . .. June 18, 2008 Please contact a Cessna Single Engine Service Station for detailed information and arrange to have Cessna Service Bulletin SB07-28-01 accomplished on your airplane

.

SBO 

### I-m-r) 1 

### J une 18,2007 

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